Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	6 Months Ended
	Jan. 07, 2022	Nov. 15, 2021	Jan. 07, 2022	Jun. 30, 2022	Dec. 31, 2021	Oct. 31, 2021	Aug. 31, 2021	Nov. 30, 2018	May 31, 2015
Equity
Share repurchase program authorized amount						$ 100,000	$ 100,000
Treasury stock repurchased				$ 47,861	$ 42,861
Third Amendment to the Nucynta Commercialization Agreement
Equity
Number of shares that can be purchased								1,041,667
Exercise price of warrant (in dollars per share)								$ 19.20
ASR
Equity
Share repurchase program authorized amount						$ 25,000
Price per share		$ 19.48
Percentage of upfront payment on a price per share		80.00%
Amount available for share repurchases under the program				$ 52,139
Shares repurchased during the period	307,132	1,026,694	1,333,826	2,457,849
Payments for repurchase of common stock		$ 25,000		$ 47,861
Shares repurchased, cost per share				$ 19.47
2014 Stock Incentive Plan
Equity
Shares of common stock authorized for issuance (in shares)									2,700,000
Increase in number of authorized shares on the first day of each fiscal year, as a percentage of outstanding common stock (as a percent)				4.00%
Shares of common stock remaining available for future grant (in shares)				1,871,810
Vesting period (in years)				4 years
Contractual life (in years)				10 years
Period following termination date vested options are exercisable (in months)				3 months